<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        // 定时器
        setTimeout(()=> {
            console.log("我是一个小小定时器")
        }, 0)

        console.log("你看我先打印还是定时器先打印")
    </script>
</body>
</html>